[INFO] cloning repository https://github.com/nokaa/neppit
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nokaa/neppit" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnokaa%2Fneppit", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnokaa%2Fneppit'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 973de5567cb3fda1d511e3c752051cd803bd78cd
[INFO] documenting nokaa/neppit against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnokaa%2Fneppit" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nokaa/neppit on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nokaa/neppit
[INFO] finished tweaking git repo https://github.com/nokaa/neppit
[INFO] tweaked toml for git repo https://github.com/nokaa/neppit written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/nokaa/neppit already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pest v0.3.3
[INFO] [stderr]   Downloaded md5 v0.2.1
[INFO] [stderr]   Downloaded siphasher v0.2.1
[INFO] [stderr]   Downloaded utf8-ranges v1.0.0
[INFO] [stderr]   Downloaded bufstream v0.1.2
[INFO] [stderr]   Downloaded dbghelp-sys v0.2.0
[INFO] [stderr]   Downloaded num-traits v0.1.36
[INFO] [stderr]   Downloaded thread-id v3.0.0
[INFO] [stderr]   Downloaded httparse v1.2.1
[INFO] [stderr]   Downloaded backtrace-sys v0.1.10
[INFO] [stderr]   Downloaded phf_shared v0.7.21
[INFO] [stderr]   Downloaded chrono v0.3.0
[INFO] [stderr]   Downloaded glob v0.2.11
[INFO] [stderr]   Downloaded postgres v0.14.0
[INFO] [stderr]   Downloaded unicode-normalization v0.1.4
[INFO] [stderr]   Downloaded traitobject v0.0.1
[INFO] [stderr]   Downloaded num v0.1.36
[INFO] [stderr]   Downloaded semver v0.1.20
[INFO] [stderr]   Downloaded fallible-iterator v0.1.3
[INFO] [stderr]   Downloaded rocket_contrib v0.2.0
[INFO] [stderr]   Downloaded synom v0.11.0
[INFO] [stderr]   Downloaded gcc v0.3.43
[INFO] [stderr]   Downloaded num_cpus v1.2.1
[INFO] [stderr]   Downloaded byteorder v0.5.3
[INFO] [stderr]   Downloaded dotenv v0.8.0
[INFO] [stderr]   Downloaded rustc-serialize v0.3.22
[INFO] [stderr]   Downloaded backtrace v0.3.0
[INFO] [stderr]   Downloaded log v0.3.6
[INFO] [stderr]   Downloaded term v0.4.5
[INFO] [stderr]   Downloaded hyper v0.10.4
[INFO] [stderr]   Downloaded libc v0.2.20
[INFO] [stderr]   Downloaded url v1.4.0
[INFO] [stderr]   Downloaded antidote v1.0.0
[INFO] [stderr]   Downloaded aho-corasick v0.5.3
[INFO] [stderr]   Downloaded error-chain v0.9.0
[INFO] [stderr]   Downloaded thread_local v0.3.2
[INFO] [stderr]   Downloaded cfg-if v0.1.0
[INFO] [stderr]   Downloaded r2d2_postgres v0.12.0
[INFO] [stderr]   Downloaded regex v0.2.1
[INFO] [stderr]   Downloaded memchr v0.1.11
[INFO] [stderr]   Downloaded term-painter v0.2.3
[INFO] [stderr]   Downloaded regex-syntax v0.3.9
[INFO] [stderr]   Downloaded thread_local v0.2.7
[INFO] [stderr]   Downloaded thread-id v2.0.0
[INFO] [stderr]   Downloaded serde_codegen_internals v0.13.0
[INFO] [stderr]   Downloaded utf8-ranges v0.1.3
[INFO] [stderr]   Downloaded regex v0.1.80
[INFO] [stderr]   Downloaded lazy_static v0.2.2
[INFO] [stderr]   Downloaded mime v0.2.2
[INFO] [stderr]   Downloaded hex v0.2.0
[INFO] [stderr]   Downloaded r2d2 v0.7.1
[INFO] [stderr]   Downloaded aho-corasick v0.6.2
[INFO] [stderr]   Downloaded env_logger v0.4.0
[INFO] [stderr]   Downloaded unreachable v0.1.1
[INFO] [stderr]   Downloaded rustc-demangle v0.1.3
[INFO] [stderr]   Downloaded num-iter v0.1.32
[INFO] [stderr]   Downloaded regex-syntax v0.4.0
[INFO] [stderr]   Downloaded phf v0.7.21
[INFO] [stderr]   Downloaded rocket v0.2.0
[INFO] [stderr]   Downloaded version_check v0.1.0
[INFO] [stderr]   Downloaded cookie v0.6.0
[INFO] [stderr]   Downloaded serde_json v0.9.6
[INFO] [stderr]   Downloaded quick-error v1.1.0
[INFO] [stderr]   Downloaded serde v0.9.7
[INFO] [stderr]   Downloaded redox_syscall v0.1.16
[INFO] [stderr]   Downloaded toml v0.2.1
[INFO] [stderr]   Downloaded handlebars v0.25.0
[INFO] [stderr]   Downloaded memchr v1.0.1
[INFO] [stderr]   Downloaded matches v0.1.4
[INFO] [stderr]   Downloaded idna v0.1.0
[INFO] [stderr]   Downloaded num-integer v0.1.32
[INFO] [stderr]   Downloaded unicase v1.4.0
[INFO] [stderr]   Downloaded time v0.1.36
[INFO] [stderr]   Downloaded syn v0.11.6
[INFO] [stderr]   Downloaded toml v0.3.0
[INFO] [stderr]   Downloaded unicode-bidi v0.2.5
[INFO] [stderr]   Downloaded unicode-xid v0.0.4
[INFO] [stderr]   Downloaded serde_derive v0.9.7
[INFO] [stderr]   Downloaded ansi_term v0.9.0
[INFO] [stderr]   Downloaded state v0.2.0
[INFO] [stderr]   Downloaded rustc_version v0.1.7
[INFO] [stderr]   Downloaded quote v0.3.12
[INFO] [stderr]   Downloaded dtoa v0.4.1
[INFO] [stderr]   Downloaded postgres-shared v0.2.0
[INFO] [stderr]   Downloaded postgres-protocol v0.2.0
[INFO] [stderr]   Downloaded itoa v0.3.1
[INFO] [stderr]   Downloaded rocket_codegen v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5b11ccda7c6df284fc07e1512fd9f23a76bd7cbece67478e5b75caf3e60e2bf4
[INFO] running `Command { std: "docker" "start" "-a" "5b11ccda7c6df284fc07e1512fd9f23a76bd7cbece67478e5b75caf3e60e2bf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b11ccda7c6df284fc07e1512fd9f23a76bd7cbece67478e5b75caf3e60e2bf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b11ccda7c6df284fc07e1512fd9f23a76bd7cbece67478e5b75caf3e60e2bf4", kill_on_drop: false }`
[INFO] [stdout] 5b11ccda7c6df284fc07e1512fd9f23a76bd7cbece67478e5b75caf3e60e2bf4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c9bcf79f5c3de0f5ca084a7fc108de0938454e3768fa5f6e635c9bb1bcde6c7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2c9bcf79f5c3de0f5ca084a7fc108de0938454e3768fa5f6e635c9bb1bcde6c7", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.20
[INFO] [stderr]     Checking num-traits v0.1.36
[INFO] [stderr]    Compiling version_check v0.1.0
[INFO] [stderr]     Checking serde v0.9.7
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling matches v0.1.4
[INFO] [stderr]    Compiling unicode-normalization v0.1.4
[INFO] [stderr]    Compiling gcc v0.3.43
[INFO] [stderr]     Checking siphasher v0.2.1
[INFO] [stderr]     Checking md5 v0.2.1
[INFO] [stderr]     Checking hex v0.2.0
[INFO] [stderr]     Checking fallible-iterator v0.1.3
[INFO] [stderr]    Compiling log v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.4.0
[INFO] [stderr]    Compiling quote v0.3.12
[INFO] [stderr]    Compiling traitobject v0.0.1
[INFO] [stderr]     Checking dtoa v0.4.1
[INFO] [stderr]     Checking itoa v0.3.1
[INFO] [stderr]     Checking term v0.4.5
[INFO] [stderr]    Compiling rustc-serialize v0.3.22
[INFO] [stderr]    Compiling httparse v1.2.1
[INFO] [stderr]     Checking state v0.2.0
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/state-0.2.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `state`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2c9bcf79f5c3de0f5ca084a7fc108de0938454e3768fa5f6e635c9bb1bcde6c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c9bcf79f5c3de0f5ca084a7fc108de0938454e3768fa5f6e635c9bb1bcde6c7", kill_on_drop: false }`
[INFO] [stdout] 2c9bcf79f5c3de0f5ca084a7fc108de0938454e3768fa5f6e635c9bb1bcde6c7